MST705 3 04/30/18
Drain Daily
Regulator
Oiler
Quick Coupler
Leader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
Tools operate on a wide range of air pressures. It is required that air
pressure measures 90 psig at the tool with the trigger fully depressed
and no load applied to the tool. Higher pressure (over 90 psig; 6.2 bar)
raises performance beyond the rated capacity of the tool, which will
shorten tool life and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water in the air
line will cause damage to the tool. Drain the water from air lines and
compressor prior to running tool. Clean the air inlet filter screen weekly.
The recommended hookup procedure can be viewed in the above
figure.
The air inlet used for connecting air supply has standard 1/4" NPT. Line
pressure should be increased to compensate for unusually long air
hoses (over 25 feet). Minimum hose diameter should be 3/8" I.D. and
fittings should have the same inside dimensions and be tightly secured.
Ensure an accessible emergency shut off valve has been installed in the
air supply line and make others aware of its location.
Lubricate the air motor daily with high quality air tool oil. If no air line
oiler is used, run 1/2 oz. of oil through the tool. The oil can be squirted
into the tool air inlet or into the hose at the nearest connection to the air
supply, then run the tool. A rust inhibitive oil is acceptable for air tools.
WARNING:
After an air tool has been lubricated, oil will discharge
through the exhaust port during the first few seconds of operation. The
exhaust port must be covered with a towel before applying air pressure
to prevent serious injury.
Al ways use the required wheel guard to prevent injury from broken cut-
off wheel parts.
If a guard has withstood a wheel breakage,
discontinue its use and replace it with a new guard. It may be
damaged.
Position the guard between the cut-off wheel and the
operator. Use barriers to protect others from wheel fragments and
sparks.
Always wear impact-safety eye and face protection to guard
against flying debris (users and bystanders). Use only wheels
rated at 18,000 RPM or higher.
Even small projectiles can injure
eyes and cause blindness. A cut-off wheel that breaks can cause very
serious injury. Daily measure the tool speed with a tachometer to make
sure the speed is not greater than the RPM marked on the cut-off wheel.
Never use a cut-off wheel marked with a speed lower than the
tool speed.
NOTE:
Before using, test cut-off wheel by briefly running the tool at
full throttle, under a barrier (such as a heavy work table) to stop any
possible broken wheel parts.
NOTE: Always turn off the air supply, drain hose of air pressure
and detach tool from air supply before installing, removing or
adjusting any part or accessory on this tool, or before per-
forming any maintenance on this tool.
Correct cut-off wheel mounting is necessary to prevent injury from
broken wheels. Do not use chipped or cracked cut-off wheels. Cut-
off wheels should be a free fit on the spindle to prevent stress at the
hole. Use only wheel collars that come with the tool for mounting
the cut-off wheel. Flat washers or other adapters may over stress
the wheel. Tighten the wheel on the spindle to prevent spin off when
the tool is turned off.
When using the cut-off tool, be careful not to exert excessive force.
Too much force could be hazardous if it causes the tool spindle to
bend or break. The burning of the work piece or excessive speed
reduction indicates too much force being applied. Start the tool off
the work, set it down on the work evenly and move in the direction
desired to make the cut. When finished cutting, lift off the work
before stopping the motor.
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air line,
moisture or restrictions in air pipes or the use of hose connections of
improper size or poor conditions may reduce air supply. Grit or gum
deposits in the tool may cut power and may be corrected by cleaning
the air strainer and flushing out the tool with gum solvent oil or an
equal mixture of SAE #10 and kerosene. If outside conditions are in
order, disconnect tool from hose and take tool to your nearest
authorized service center.
AIR SUPPLY
LUBRICATION
OPERATION
TROUBLESHOOTING
